I bought my current TS about a year ago, so this may be a little dated.
I bought the Delta, if memory serves me correct its the 36-680 line.
I did a lot of research, talked to a lot of people, and decided on the
Delta after talking to the good people at Woodcraft. One guy there in
particular changed my mind. He said the difference with Delta is that
their motors are made in the U.S., have an additional capacitor (not an
engineer here) and in the long run that's what its all about.
That being said, I almost bought any one of a dozen other brands.
Grizzly is what it is. I own a jointer and have been very happy with
it, although the blade guard suffered from poor quality springs and
borings. Makes wood flat, was cheaper than others.
I do have the 22-580 Delta Planer and I love it. Wood Magazine did a
good review of contractor saws a year ago and I think FWW's Tool Guide
did a review on cabinet saws & hybrids.
Good luck, and have fun shopping,